XGY   Grimsby Mountain, ON Weather Observed At   43-11  N    79-34  W

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2026-08-22	5:30pm			Max		Min
Weather		----
Temperature		19.6 °C		27.6 °C	1:51pm	17.7 °C	3:07am
Relative Humidity		86 %		87 %	5:19pm	60 %	1:51pm
Dew Point		17.1 °C		21.1 °C	1:03pm	12.8 °C	12:07am
Wind Velocity		205 ° at  0.3 G 6.1 kt		6.1 kt	1:37am
Pressure		29.809 "  ↓		30.022 "	12:01am	29.796 "	5:09pm
Rainfall Rate		2.4 mm/h		90.0 mm/h	5:23pm
Snow On Ground		0 cm
Brightness / Darkness		32 W/m² /  0.00 m/"²		1201 W/m²	1:50pm	19.99 m/"²	12:55am
Remarks

Rainfall	Today	3.0 mm	Storm Total	3.0 mm
Snowfall	Today	0.0 cm	Storm Total	0.0 cm

Evapotranspiration

Today

-2.62 mm

Lake Conditions

Water Temperature  22.4 °C

Waves  ½ '

ICE FREE

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Meteor Index	42   Perseids
Aurora Index / Solar	3   Quiet   + 0 nT	Solar Flux   124  sfu  /   S 0    G 0    R 0   /  MUF   24.9 MHz

Sunrise	6:32am	Sunset	8:10pm
Moonrise	N/A	Moonset	N/A	Moon Phase	Waxing Gibbous

Grimsby Mountain Weather Maps
Local	Regional	Area	Synoptic
updated H+09 and every 10m	updated H+19 and H+49	updated H+19

Ontario 6-Hour Meteorological Summary

Canadian 6-Hour Meteorological Summaries

CLIMAT Data
Official	Yesterday					2004	2005	2006	2007	2008	2009	Normals & Records
		2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
		2020	2021	2022	2023	2024	2025	2026

Grimsby Mountain Charts

	Sky Quality (Darkness) Meter courtesy of

              

Wx Map	Sat Pix	IR Sat Pix	Radar	Lightning
	Water	Ice

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  This is a privately operated weather station that is part of the Meteorological Service of Canada's official observing network.
Permission to publish the weather statistics found on this website is not required.
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